SYPNOSIS ONIMPROVEMENT OF SUBGRADE CHARACTERISTICS USING WASTE AND RECYCLED MATERIALS

SUBMITTED TO:Meghna SharmaAssistant Professor

SUBMITTED BY:Khangembam Suresh Singh(11103705) Khangembam Sahendra Singh(11110684)Maibam Ajay Meitei(11105167) Phuritsabam Macha Nilathoi( )Khumanthem Homeshwar Singh( )

SIGNIFICANCE OF STUDY

In India, most of the soft ground such as coastal alluvial soil is extremelysoft, and easy to find at coastal area. Soft soil faced many problems in constructionarea even at road construction and building construction. Settlement will beoccurring at the soft ground if not treated properly. The ground improvement is avery important and as a key basic in the engineering construction.

Treatment of soft soils with natural product offers economical, ecological andenvironmental benefits. For the advantages, coir fibre is a versatile product, availableabundantly throughout the country, produced at cheaper costs, it is, as such a sureand economical answer. The coir fibre also is easy to find in India and the othercountries.

The coir fibre also has strong characteristic and durable, making it suitablefor use in the cementitious matrix for high performances structural element. Flexuralproperties are very important for construction materials, especially when theirintended applications are in area such as country road or pavement. The advantagesof using natural fiber as reinforcements to improved bending strength, post crackload bearing capacity and much higher energy absorption.

The coir fibre as a reinforced to stabilize the soft soil is a relevant because ofthe strength characteristic and also these materials are biodegradable organic fibreand hardest among other natural fibres. The coir fibre also is sufficiently eco-friendlyproduct and so its application will never sustain any damages to environment and sois far free from resentments. This method will prevent the failure of roadembankment, settlement prevention, stream bank protection and pond liners. Besides,indirectly this method will increase the shear strength of soft soil.

OBJECTIVE

The aim of this study is to investigate the strength characteristic of soft soilreinforced with coir fibre. By carrying out this study, the following objectives will beachieved:

1. To determine the properties of soft soil.2. To compare the effectiveness strength between treated and untreated soft soil.3. To find the effectiveness of coir fibre in soft soil.

SCOPE OF STUDY

For this study, the material that has been prepared is the sample of soft soiland coir fiber. The soil is considered as near-normally consolidated clays and clayey silts. The soil sample is taken from Lovely Professional University campus. The coir fibre that has been used is a coconut coir fibre.The coir fibre is measured based on four different length which is 15mm and the fibre content is 0.25%, 0.50%, 0.75% and 1.0% by raw of sample.